Cooling system hoses and lines
More informationAt Global Parts, we offer a wide selection of original used car parts, including cooling system hoses and lines for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The cooling system hoses and lines we offer are quality-controlled, ensuring you receive a top-quality product.
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Part no. 7L6122109D
Audi Q7 4L TFSI Water Hose Cooling Coolant Radiator Pipe Line 7L6122109D
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Part no. 8E0121049L
Audi A4 B7 2.0 Petrol Water Hose Cooling Radiator Coolant Pipe Line 8E0121049L
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Part no. 1K0121070AQ
Audi TT 8J 2.0 TFSI Water Hose Coolant Pipe Line 1K0121070AQ
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Part no. 079121070CL
Audi RS6 C7 4.0 TFSI Petrol Coolant Pipe Hose Line 079121070CL
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Part no. 5Q0816743D
Audi A3 8V VW Golf Mk7 Air Conditioning Hose A/C Pipe Line 5Q0816743D
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Part no. 04L121071H
Audi A6 C7 Q5 8R Water Coolant Hose Pipe Tube Line 2.0 TDI DDDA 04L121071H
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Part no. 8K0121101K
Water Hose Audi A4 B8 A5 8T 2.7 3.0 TDI Diesel Coolant Pipe Line 8K0121101K
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Part no. 8E0121049AC
Audi A4 B7 Water Hose Cooling Radiator Coolant Pipe Line 2.0 Diesel 8E0121049L
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Part no. 5N0121070S
Audi Q3 8U Engine Cooling System Coolant Line Hose Pipe 5N0121070S
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Part no. 8R0121081AQ
Audi Q5 8R Expansion Coolant Radiator Hose Pipe Tube Line Cooling 8R0121081AQ
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Part no. 3C0122157FH
Audi TT 8J 1.8 2.0 TFSI Petrol Engine Water Coolant Pipe Hose Line 3C0122157FH
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Part no. 5Q0121058AE
VW Polo GTI AW Audi A3 8V Water Hose Cooling Coolant Pipe 2.0 TFSI 5Q0121058AE
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Part no. 5Q0122101BE
Audi A3 8V Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BE
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Part no. 8E0121030A-1
Audi S4 B6 Water Hose Cooling Coolant Radiator Pipe Line 8E0121030A
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Part no. 5Q0121049BJ
Audi A3 8V 1.0 TSI Water Pipe Engine Cooling Coolant Hose Line 5Q0121049BJ
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Part no. 4G0121049AP
Audi RS6 C7 4.0 TFSI CRDB Petrol Water Coolant Pipe Hose Line Tube 4G0121049AP
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Part no. 8W0122101AL
Audi A5 8T Coolant Water Hose Line Tube Pipe 2.0 TDI Diesel 8W0122101AL
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Part no. 03L121065
Audi A3 8P 2.0 TDI Water Coolant Pipe Hose Tube 03L121065
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Part no. 4G0122101P
Audi RS6 C7 4.0 TFSI Petrol Radiator Upper Hose Line Pipe Left N/S 4G0122101P
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Part no. 5Q0816743G
Audi A3 8V 1.0 TSI Water Hose Radiator Coolant Refrigerant Pipe Line 5Q0816743G
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Part no. 4G0121081CS
Audi A6 C7 Expansion Coolant Tank Breather Vent Pipe Line 4G0121081CS
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Part no. 04L122073B
Audi A3 8V 2.0 TDI Diesel Water Pipe Engine Cooling Coolant Hose Line 04L122073B
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Part no. 4G0122449D
Audi A7 4G Engine Water Coolant Cooling Hose Pipe Line 3.0 TDI 4G0122449D
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Part no. 5Q0122157DJ
Audi A3 8V 1.0 TSI Water Pipe Engine Cooling Coolant Hose Line 5Q0122157DJ
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Part no. 8K1819376G
Audi A4 B8 8K 2.0 TDI CAGA Coolant Hose Heater Water Line 8K1819376G
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Part no. 8W0122055AM
Audi S4 B9 Turbo Coolant Hose Line Tube Pressure Pipe 3.0 Petrol 8W0122055AM
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Part no. 5Q0122291BL
Audi A3 8V 2.0 TFSI Water Coolant Pipes Hoses Connector Coupling 5Q0122291BL
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Part no. 5Q0121070BQ
Audi S3 8V Water Hose Engine Coolant Cooling Pipe Line 5Q0121070BQ
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Part no. 5Q0816721AD
Audi A3 8V 1.0 TSI Water Hose Radiator Coolant Refrigerant Pipe Line 5Q0816721AD
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Part no. 8P0122101A-1
Audi RS3 8P 2.5 TFSI Water Coolant Pipe Hose Line Upper Front 8P0122101A
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Part no. 5Q0121049AD
Volkswagen Audi A3 8V Seat Petrol Water Coolant Pipe Hose Line 5Q0121049AD
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Part no. 8V0121075
Audi RS3 8V Engine Water Coolant Pipe Hose Liesel 8V0121075
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Part no. 8K0121049L
Audi A4 B8 Water Hose Radiator Coolant Pipe Line 2.0 TDI 8K0121049L
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Part no. 8E0145738D
Audi A4 B7 3.0 TDI BKN Turbo Intercooler Pipe Hose Line Tube 8E0145738D
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Part no. 8E0121044B
Audi A4 B7 Water Hose Cooling Radiator Coolant Pipe Line 8E0121044B
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Part no. 80A122101BK
Audi Q5 FY Coolant Water Hose Line Cooling Unit Tube Pipe Petrol 80A122101BK
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Part no. 8K0121055L-1
Audi A4 B8 Water Hose Cooling Coolant Radiator Pipe Line Diesel 8K0121055L
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Part no. 80A122449Q
Audi Q5 FY 2.0 TFSI Petrol Water Hose Cooling Coolant Pipe Line 80A122449Q
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Part no. 8R0121049AJ
Audi Q5 8R 3.0 TDI Coolant Water Hose Line Tube Pipe 8R0121049AJ
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Part no. 5Q0122073AE
Audi Q3 8U Water Coolant Hose Tube Line Pipe 2.0 TDI DFTA Diesel 5Q0122073AE
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Part no. 8R0122101Q
Audi Q5 8R 3.0 TDI Water Coolant Pipe Hose Line 8R0122101Q
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Part no. 8P0820721
Audi RS3 8P Refrigerant Hose Cooling Radiator Coolant Pipe Line 8P0820721
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Part no. 6C0122109A
Audi A1 8X 1.4 TFSI Engine Water Coolant Pipe Hose Line Tube 6C0122109A
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Part no. 8E0260701BJ
Audi S4 B6 Engine Cooling Radiator Pipe Hose Line 8E0260701BJ
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Part no. 8J0121447F
Audi TT 8J 1.8 Petrol CDAA Engine Coolant Vent Hose Pipe 8J0121447F
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Part no. 06M121481L
Audi A4 S4 B9 3.0 TFSI Petrol Water Coolant Pipe Hose Line 06M121481L
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Part no. 8W0122449AS
Audi S4 B9 S5 B9 3.0 TFSI Petrol Water Hose Radiator Coolant Pipe 8W0122449AS
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Part no. 04L121064AC
Audi A3 8V Engine Water Coolant Pipe Cooling Hose Line 04L121064AC
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Part no. 5Q0122101BL
Audi A3 8V 2.0 TDI Water Hose Radiator Coolant Pipe Line Diesel 5Q0122101BL
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Part no. 6C0122101AM
Audi A1 8X 1.6 TDI Diesel Water Coolant Pipe Hose Cooling Line 6C0122101AM
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Part no. 8W0122101AA
Audi S4 B9 3.0 TFSI Petrol Coolant Water Hose Line Tube Pipe 8W0122101AA
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Part no. 06D121065J
Audi A4 B7 A6 C6 Coolant Hose Line Tube Pipe 2.0 TFSI 06D121065J
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Part no. 04L122157BC
Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 04L122157BC
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Part no. 8K0121075
Audi RS4 A4 B8 4.2 FSI CFSA Upper Enigne Coolant Pipe Hose Right O/S 8K0121075
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Part no. 06K121497AQ
Audi S3 8V Water Hose Cooling Coolant Pipe Line 06K121497AQ
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Part no. 04L121131AD
Audi A5 8T Water Coolant Flange Pipe Hose Line 04L121131AD
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Part no. 8K0121055Q
Audi RS4 B8 RS5 8T Engine Water Coolant Pipe Cooling Hose Line 8K0121055Q
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Part no. 07L121070R
Audi S6 C6 5.2 FSI V10 Coolant Hose Pipe Cooling Line 07L121070R
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Part no. 1K0122051DL
Audi A3 8P Radiator Coolant Water Hose Pipe Line 2.0 TDI Diesel 1K0122051DL
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Part no. 4G0121071N
Audi A7 4G8 3.0 TDI CDUC Diesel Water Coolant Hose Line Tube Pipe 4G0121071N
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Part no. 8E0121070B
Audi A4 S4 B7 Upper Coolant Radiator Hose Line Pipe 8E0121070B
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Part no. 03G121065AE
Audi A3 8P Seat Leon Mk2 2.0 TDI Water Coolant Cooling Pipe Hose Line 03G121071A
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Part no. 8E0121030A
Audi A4 S4 B7 Water Hose Cooling Coolant Radiator Pipe Line 8E0121030A
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Part no. 4F0121055J
Audi A6 C6 Water Hose Coolant Cooling Tube Pipe Line 4F0121055J
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Part no. 06D121071R
Audi A4 B7 2.0 TFSI BGB Water Coolant Hose Tube Line Pipe 06D121071R
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Part no. 079121137F
Audi S5 8T Cooling Coolant System Flange Rear Right O/S 079121137F
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Part no. 5Q0121070AB
Audi VW Seat Petrol Coolant Hose Water Pump Pipe Cooling Line 5Q0121070AB
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Part no. 8R0121081BS
Audi Q5 8R Expansion Bottle Tank Radiator Hose Line Tube Pipe 8R0121081BS
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Part no. 8V0122480
Audi Q3 RSQ3 F3 Petrol Water Pipe Engine Cooling Coolant Hose Line 8V0122480
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Part no. 8K0122101B
Audi A4 B8 A5 8T Heater Water Cooling Coolant Pipe Hose Line 3.0 TDI 8K0122101B
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Part no. 04L121064AE
Volkswagen Seat Skoda Audi 2.0 TDI Water Coolant Pipe Hose Line 04L121064AE
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Part no. 079121131BC
Audi S4 B7 Water Hose Union Radiator Pipe Tube 079121131BC
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Part no. 6C0129637A
Audi A1 8X 1.8 TFSI TSI Engine Water Coolant Pipe Hose Line Tube 6C0129637A
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Part no. 5WA122051R
Audi A3 8Y Coolant Water Hose Line Tube Pipe 5WA122051R
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-40%
Part no. 8R0121049J
Audi Q5 8R 2.0 TDI Coolant Water Hose Cooling Unit Line Tube Pipe 8R0121049J
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Part no. 8K0819334AM
Audi A4 B8 2.0 TFSI CDNC Petrol Engine Coolant Hose Line Tube 8K0819334AM
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Part no. 7L6122101L
Audi Q7 4L Radiator Coolant Hose Water Pipe Line 3.0 TDI 7L6122101L
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-15%
Part no. 8J0121063B
Audi TT 8J 2.0 TFSI CDLB Engine Coolant Hose Line Tube Pipe 8J0121063B
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Part no. 06F121492L-1
Audi TT 8J 2.0 TFSI Turbo Coolant Return Pipe Hose Line 06F121492L
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Part no. 5N0122051
Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 5N0122051
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Part no. 7L8122096
Audi Q7 4L 3.0 TDI Water Hose Cooling Radiator Coolant Pipe Line 7L8122096
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Part no. 4E0121101BR
Audi A8 D3 Water Hose Cooling Coolant Radiator Pipe Line 4E0121101BR
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Part no. 5Q0121051K
Audi S3 8V Water Pipe Hose Engine Coolant Cooling Line 5Q0121051K
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Part no. 5N0122051BL
Audi Q3 8U Water Hose Cooling Radiator Coolant Pipe Line 5N0122051BL
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Part no. 5WA121070C
Audi A3 8Y Coolant Water Hose Line Tube Pipe 5WA121070C
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Part no. 6C0122051AE
Audi A1 8X 1.4 TFSI CZCA Coolant Hose Line Tube Pipe 6C0122051AE
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Part no. 8R0121101J
Audi Q5 8R 2.0 TDI Coolant Water Hose Line Tube Pipe 8R0121101J
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Part no. 6C0122109E
Audi A1 8X 1.6 TDI Diesel Engine Water Coolant Pipe Hose Line Tube 6C0122109E
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Part no. 8K0145673AM
Audi A5 8T 2.0 CNCD Petrol Intercooler Pipe Hose Line Tube 8K0145673AM
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Part no. 8N0121051B
Audi TT 8N Water Hose Cooling Coolant Radiator Pipe Line 8N0121051B
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Part no. 8K0122101G
Audi A5 8T Heater Water Cooling Coolant Pipe Hose Line 8K0122101G
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Part no. 1K0121096R
Audi A4 B7 2.0 TDI Diesel Water Hose Cooling Coolant Pipe Line 1K0121096R
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Part no. 8W0145947E
Audi A4 B9 A5 F5 2.0 TDI Diesel Engine Water Coolant Pipe Hose Line 8W0145947E
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Part no. 1K0122447ED-1
Audi A3 8P 1.9 TDI BLS Diesel Coolant Water Hose Line Tube Pipe 1K0122447ED
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-5%
Part no. 5Q0122109J
Audi S3 8V VW Volkswagen Golf 7 Water Coolant Pipe Hose Line Tube 5Q0122109J
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Part no. 8K0121081AE
Audi S4 B8 S5 8T Water Hose Overflow Tank Coolant Pipe Line 3.0 TFSI 8K0121081AE
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Part no. 1K0121157BJ
Audi A4 B7 2.0 TDI Diesel Water Hose Cooling Coolant Pipe Line 1K0121157BJ
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Part no. 5N0122101AT
Audi Q3 8U 2.0 TDI DFTA Engine Radiator Upper Water Coolant Hose 5N0122101AT
Product currently unavailable

Part no. 1K0121109AK
Audi A3 8P Water Cooling Coolant Pipe Hose Line Petrol Engine 1K0121109AK
Product currently unavailable

Flexible and rigid cooling hoses – durability and fit for popular models
Rubber and silicone hoses for cooling systems – temperature and pressure resistance
Cooling system hoses and lines are key components that enable coolant circulation between the radiator, water pump, thermostat, and engine. Their efficiency and tightness are essential for proper cooling system operation and preventing engine overheating. At Global Parts, you'll find a wide selection of used car parts., including cooling system hoses and pipes, ideal for BMW , Audi , Mercedes , Volkswagen , Mini and others .
What is the difference between flexible and rigid cooling system hoses?
Flexible cooling hoses made of EPDM rubber or silicone help compensate for engine vibrations and pressure changes. Rigid hoses (e.g., aluminum or PA12 plastic) are used where dimensional stability and resistance to high temperatures—up to 150–180°C —are required. Modern vehicles often use a combination of both types, ensuring optimal coolant flow and longer system life.
What are the functions of cooling system hoses and pipes ?
Cooling system hoses and lines play a key role in regulating engine operating temperature: Coolant Transport – Hoses and lines connect key components of the cooling system, allowing coolant to flow throughout the system. Overheating Prevention – By circulating the coolant, they maintain the proper operating temperature of the engine, preventing it from overheating. Adequate flexibility and tightness – The materials from which the lines and hoses are made ensure their resistance to high temperatures, pressure and the effects of coolant. Efficient cooling system hoses and lines are essential for the efficient operation of the entire cooling system.
Construction and technical parameters of cooling pipes
A typical cooling system hose consists of several layers: a protective outer layer, a reinforcing layer (reinforced with synthetic fiber), and an inner layer that is chemically resistant to coolants. The operating pressure of such hoses is typically 1–2 bar, and their peak strength can reach up to 5 bar . The use of appropriate materials prevents hose cracking during rapid temperature changes, especially in cars with turbocharged engines. Cooling system hoses, commonly known as radiator hoses, can be made of various materials – most commonly EPDM rubber or silicone, which can withstand temperatures from -40°C to as much as +150°C. High-performance vehicles, such as the BMW M series or Audi S-Line, use silicone hoses with a reinforced textile construction, ensuring longer life and resistance to operating pressures above 2 bar. Flexible hoses compensate for engine vibrations, while rigid sections (e.g., aluminum) ensure stability at high fluid flow rates.
Why is it worth taking care of cooling system hoses and pipes ?
Damaged or worn cooling system hoses and lines can lead to serious cooling system problems. Common symptoms include: Coolant Leak – Leaks in lines or hoses can lead to leaks and a drop in coolant level. Engine Overheating – Restricted coolant flow due to damaged hoses can lead to engine overheating. Noises and vibrations – Improper mounting or damaged hoses can cause vibrations and noises during system operation. At Global Parts, we offer original used cooling system hoses and lines that have undergone detailed quality tests, ensuring their durability and tightness.
Symptoms of damage and compatibility of cooling hoses - table
| Fault symptom | Possible cause | Recommended action |
|---|---|---|
| Coolant level drop | Microleak in the pipe | Cooling system hose replacement |
| Engine overheating | Clogged hose or kink | Checking for patency, replacement |
| Vibration or gurgling | Loose cable connections | Tightening the clamps, checking the handles |
| Low engine operating temperature | Too much flow – no resistance | Thermostat operation check |
How to choose the right cooling system hoses and pipes ?
When selecting cooling system hoses and lines, there are several key aspects to consider: Vehicle-specific fit – Every cooling system has its own specific technical requirements. At Global Parts, you'll find cooling system hoses and lines perfectly suited to BMW , Audi , Mercedes , Volkswagen , Mini , and more. Technical Condition – Make sure that the lines and hoses are free from cracks, bulges and other damage. Material resistance – Choose hoses and lines made of materials that are resistant to high temperatures and operating fluids.
Parts selection procedure
To select the correct cooling system hose, it's best to use the vehicle's VIN or the OEM part number. The Global Parts system automatically searches by engine code or part number, minimizing the risk of incorrect matching. This ensures that the hoses are fully compatible with the water pump, radiator, and thermostat, ensuring the entire system maintains its factory seal.
Why choose used cooling system hoses and pipes ?
Used car parts , such as cooling system hoses and lines, are a practical solution that allows you to save money while maintaining high quality. By choosing used cooling system hoses and lines, you gain: Lower costs – Used components are much cheaper than new ones, but offer equally high quality. Ecology – Recycling car parts supports environmental protection and reduces waste. A wide range – In our store you will find cooling system hoses and pipes for the most popular car brands.
How to take care of cooling system hoses and pipes ?
To ensure that cooling system hoses and lines function reliably for a long time, it is important to follow a few rules: Regularly check the condition of lines and hoses to prevent coolant leaks. Monitor the coolant level – a sudden drop may indicate a leak in the lines. Replace damaged or worn components in time to avoid more serious cooling system problems. If you need a replacement, you'll find the right used car parts at Global Parts that will restore full efficiency to your cooling system.
FAQ - Frequently asked questions about cooling system hoses and lines
| Question | Answer |
|---|---|
| What is the purpose of the cooling system hose? | It is a flexible or rigid element connecting the components of the cooling system, which allows coolant to flow between the engine, radiator and water pump. |
| What is the difference between a silicone hose and a rubber hose? | Silicone hoses are more resistant to high temperatures (up to 200°C), making them ideal for sports or tuning applications. Rubber hoses are standard on most passenger cars and offer good flexibility. |
| How do you know if your cooling hose needs replacing? | Symptoms include leaks, cracks, flattening, or soft material. It's also worth looking for signs of corrosion at the joints. |
| Are the cooling system hoses universal? | No. Each car model has hoses with specific diameters, lengths, and bend angles – so compatibility with a specific engine or OEM designation is important. |
| Do cooling system hoses affect engine performance? | Yes, indirectly. An efficient cooling system maintains optimal operating temperatures, which translates into stable power and lower fuel consumption. |
| How often should you replace your cooling system hoses? | It is recommended to inspect it every 40,000–60,000 km and replace it approximately every 5 years, especially if there are visible signs of wear. |
| Where to buy cooling system hoses in good condition? | It is best to buy from a trusted store like Global Parts, where each part undergoes quality control and is described in terms of its fit for specific vehicle models. |
Summary: Cooling System Hoses and Pipes at Global Parts Automotive Store
Cooling system hoses and lines are key components that ensure efficient coolant flow and maintain optimal engine operating temperatures. By maintaining their technical condition, you can avoid costly repairs and extend the engine's lifespan. The Global Parts automotive store invites you to browse our extensive selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , and more, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .